Weighing device for elevators.



E. P. KILGOYNB.

WBIGHING DEVICE PoR ELEVATORS.

a SHEETS-SHEET 1.

APPLICATION FILED JULY 2, 1910 Patented Sept. 19,

n MWF P. KILGOYNE.

WEIGHING DEVICE FOR ELEVATOBS.

APPLICATION FILED JULY 2, 1910 www au mem sept. 19, 1911.

3 SHEETS-SHEET 2.

Gw.. EPAKilcom/le E; P. KILGOYNB. WEIGHING DEVICE FOR ELBVATORS.

APPLIOATION FILED JULYZ, 1910 Patented Sept. 19, 1911.

3 SHEETS -SHEBT 3.

5314 vanto@ JEL,

UNITED sTArEs PATENT 1 OFFICE.

:EARL P. KILcoYNE, oF CAIRO. ILLINOIS.

y WEIGHING DEVICE FOR ELEVATORS.

To all whom it may concern:

yBe it known that I, EARL P. KILCOYNE, a citizen of the United States, residing at Cairo, in the county of Alexander, State of Illinois, have invented certain new and useful Improvements in lVeighing Devices for Elevators; and I do hereby declare the followingto be a full,`clear, and exact description `of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to elevators such as are used to carry weights of various kinds up in buildings and it has special reference to a 'weighing device which indicates the amount of weight placed upon the elevator.

One object of the invention is to provide means connected directly to the elevato-r to weigh the load placed thereon.

A second object of the invention is to prof `the invention consists in general of angelevator provided with a novel and improved appliance, the appliance being used for registering weights on the elevator and recording the totals thereof.

The invention further consists in certain novel details of construction and combinations of parts hereinafter. fully described, illustrated in the accompanying drawings, and specifically set forth in the claims.v

In the accompanying drawings, like characters of reference indicate like' partsv in the several views.

Figure 1 is a view from the rear of-an elevator provided with this invention, the..

view being taken from this side, the better to disclose certain of the details thereof. Fig. 2 is a top plan view of the elevator. Fig. 3 is a front view of one of the dials and the parts connected thereto. is a seci 4 tion through such a dial. Fig. 5 is a. detail view showing a mechanism used `iii 60111190:

Specification of Letters Patent.

tion with the overload indicator, the mechanism showing the number of times the device has been overloaded.

The elevator Vcar itself is indicated at 10`l the upper member of the frame and carries on its lower end a spring seat 16. The ey'e 14 is provided so that in the event of the shaft 13 giving away the rope will not allow the elevator to fall but will be caught by said eye. Carried on the upper Vmember of the frame and immediately above the spring seat 16 is a second spring seat 17 and between these two spring seats is a heavy coil spring 18 arranged to compress when the load is placed upon the elevator.' Atl one side of the spring seat 16 is secured'. a rack ybar 19 which meshes with an annular dial 20 having peripheral teeth 21. This dial 20 is provided with any suitable divisions and inside of the dial is a. center 22 supported onU a bracket 23 carried on the frame A. Be tween the center 22 and the dial 20 are a series of anti-friction balls 24: so arranged that they permit the easy movement of the annular dial over its center. On the front side of this dial is 'a pointer or index 25 which normally stands opposite the zero of the graduations. Between the bracket 23 Patented Sept. 19,1911. Applicationfnea July 2, 1910'.A fserial N'o. 570,16?.

carried in an eye 14 formed at the upper end of a bar 15 which passes downward throughu and the frame Al is insulation 26. At 27 is a similar insulated bracket carrying a similar center 28 around which moves a dial 29 carried, like the dialv 20, on balls 30.

Extending out from the rear of the dial 29` is an arm 31 while-extending from the dial '20 is a similar arm 32. The bracket-127ffs supported, ony insulation 33 and toithis bracket. is connected a wire 34 leading to a bell 35' which is in turn connected by a wire 36 ,to a battery 37 or other suitabley source 4'of electrical supply.. The.y other ter-minalof the battery 37 is connected bya wirey 38 to "thebracket`23. The Adial 29 is normally kept with4 the armk 31 in the positionsho'wn in lines `in Fig. *1 by means of aspring'g 'which has one end connected to the center 28 and .the other to the ring 29. rIhi's dial and its parts formthe overload dial.

. Now when weight is placed upon the elevator the spring" 18 will be compressed and the frame A drawn down with reference to the spring seat 16. This will cause- ,the dial 20 to rotate through its engagementwith the rack 19. JV hen the rotation has progressed to such a degree that the arm 32 contacts with the arm 31 av circuit will be established through lthe `bell and an alarm-be rung.` If more material be placed upon. the elevator the dial 29'will be rotated and show the extent of the overload. When the weight is removed from the elevator thev dial 2O will be returned to its original position bytheV action of the rack I 2oA Vspring 45 carried ona .curved guide 46.y

In order to prevent backward movement of the, dial 42 a pawl 47 is provided which is pivoted adjacent said dial and which is held against the dial by a spring 48.

AAt 49 is a second bracket which supports a center 50. around which. moves an annular dial 51." Extending outward from this annulardial are a series of teeth 52 and carried by the dial 42 is a single tooth or pin 53. In the operation of this portion of the invention, wheneverv the spring 18 is compressed the ratchet bar 44 causes the dial 42 to rotate. When the spring 18 expands upon removal of the load the spring 45 yields and permits the ratchet bar tol move over the teeth 43,. the dial being,` at this time heldstationary by the'pawl 47. With each complete revolution of thediai42 the tooth 53 contacts with one of the teeth 52 and roy tates the dial 5l to the extent of one tooth.

In lorder to eliminate friction between the last two dials and their centers the center 4 1-is surrounded by balls 54 while the center 50 is surrounded by similar balls 55.

The attaching means whereby-the device is carried on the elevator is indicated in gen-- eral at A.

From 'the foregoing it will be observed Athat the load placed on the elevator' actuates theweighing mechanism and that when an loverload is placed thereon an alarm is given and the extent of overload. indicated.

Furthermore, from the operation -of the ratchet provided device itwill be plain that the accumulated loads may be indicated. Whenever it is desired to reset the latter it is doneA by simply depressing the spring pawl and rotating the dial until the Zero mark is brought opposite the pointer carriechen the center.

Forv the purpose of indicating the num-` ber of'times Iliat the elevator has been overloaded there is provided on the dial 29 a spring pressed pawl 72 which engages with a ratchet 78 mounted to rotate on a pin 74 supported on the frame 27. Furthermore, the frame-27 is provided with a checking pawl 75 likewise spring pressed. rIhis portion of the invention is so arranged thatlas the overload indicator is rotated in the manner previously described the ratchet 7 3 will be rotated by the pa-wl 72 but when the spring 39 returns the dial 29 to its original position the pawl 72 will movel over the teeth of the ratchet while the pawl 75 will prevent its return. Th'e ratchet is provided with indicator numbers and is so proportioned that each time the elevator is overloaded o'ne of these numbers will. bedisplayed through a suitable opening 76 forining an index, it being observed that an arrow head or the like may be used as an uindex in place of this opening.

There has thus been provided a simple and efficient device of the kind described and for the purpose specified.

It is obvious that minor changes may be made in the form andconstruction of this invention Without departing from the material principles thereof. It is not therefore desired to confine the invention tothe exact form herein shown and described, but it V'is-wished to include all such as properly come within the scope 'of the appended elevator, an overload indicator' controlled by said weight indicatingmechanism, and a register controlled by the overload indicator.

8. In combination. with an elevator car; a weight indicating mechanism carried by said car, resilient suspension means for said car, an operative connection between said suspension means and weighty indicating mechanism, and an overload indicator controlled by said weight indicating` mechanism, said overload indicator including an alarm and means to indicate the extent of overload.

4. In combination with an elevator car: a

i 1 cosi-bis l'said car, a totaling mechanism carried by said cam-and operative connections between the spring seat and the weight indicating and totaling mechanisms.

6. In combination with an elevator car; a frame supporting said car, a hoisting cable, a `spring seat carried by said cable, and a spring between said spring seat and frame, a

)weight indicating mechanism carried by said 'a spring seat carried b spring between said spring seat and frame;

car, an operative connection between said suspension means and weight indicatingV mechanism, and an yoverload indicator controlled by said weighingmechanism.

7. In combination with an elevatorcar; a frame supporting said car, a hoisting cable, .a spring seat carried by said cable, and a Spring between said spring seat and Jframe;

a weight indicating mechanism carried byV said car, a totaling mechanism carried by said car, an operative connection between said spring 'seat and the weight indicating and totaling mechanisms, andan overload indicator controlled by said weight indicating mechanism.

8. In combination with an elevator car'; a

frame supporting said car, ahoisting cable, said cable, and a a weight indicating. mechanism carried by said car, an operative connection between -said suspension means and weighing mecha# nism, and an overload indicator controlled by said weighing mechanism and including an alarm andmeans to indicate the extent' .9. AIn combination with an elevator car; a frame support-ing said car, a hoisting'cabie, a'spring seat carried by said cable, and a spring between said spring seatand frame;

a weight indicating mechanism carried by said car, a totaling mechanism carried by said car, an ,operative connection between said spring seat and the weightindicating and totaling 'mechanisms, and an .overloadA l indicator controlled by said weight indicat'- ing mechanism "and including `an alarm and means to indicate the extent of overload.

10. In combination with an elevator car, a trame supporting said car, a hoisting cable, a spring seat carried-by saidcable, and a spring between said'spring seat and frame; a rotary dial provided with peripheral teeth, arack carried by said spring seatand meshing with said dial, 'a stationary center carrying said dial and. connected to said frame, and an index on said-center.r i

11. In combination withan elevator car; a frame supporting said car, a hoisting-cable, a spring seatcarried by said cable,- and Y'a spring between said spring seat and frame;

a rotary dial provided with peripheral teeth,

a rack carried by said spring seat and meshing with said dial, a stationary center carrying said dial and connected to saidifram'e,.a pointer on said center,` an overload indicator, and means to operate said overload indicator. i

12. In combination with an elevator car, a

` frame supporting'said car, a hoisting cable,-

a spring seat carried'by said cable, and a spring between said spring seat and frame; a rotary ring, a stationaryicenter for said ring connected to said frame, ratchet teeth formed around the periphery of said ring, a

.bar pivoted to the spring seat and provided with ratchet teeth, a vspring urging the bar.-

against said ring, and al pawl pivoted al'- jacent to and engaging with said teeth.

13. In'combination with an yelevator ar, a frame supporting said car, a hoisting/cable, a spring seat carried by said cable""and a spring between said spring s'eat an frame; a rotary ring, a stationary center, for said ring connected to said frame, ratchet teeth formed around the periphery of ,said ring, a ratchet bar` pivoted to the sp fing seat,

s rin urvin said ratchet bar against saidv ring, a pawl pivoted to and e gaging with said teeth, a dial adjacent sai/dl ring, a dial center carried by saidfram an indexv on said center, aseries ofspacet teeth projectn ing from said dial, and a pin carried by -said ring to move the dial a distance lo one tooth for each revolution of the ri g.

In testimony whereof, I afiix my signature,

in presence of two witnessesy .EARL r. inLcoYNn Witnesses: C

ELLIS E. Cox,

RoWENA, C. STACK. 

